\documentclass[12pt,a4paper]{report}
%自定义命令的宏包
\usepackage{zwfcmd}
%设置背景色
\definecolor{backcolorA}{RGB}{255,242,226} 
\definecolor{backcolorB}{RGB}{253,230,224} 
\definecolor{backcolorC}{RGB}{227,237,205} 
\definecolor{backcolorD}{RGB}{220,226,241} 
\definecolor{backcolorE}{RGB}{234,234,239} 
\pagecolor{backcolorC}
%文档开始
\begin{document}
%title
\title{WPS的使用}
\maketitle
%插入目录
\tableofcontents
%-----------------------------
\pagecolor{backcolorE}
\input{./files/wps_word_1}
\input{./files/wps_word_field}
%-----------------------------
\end{document}

